final bid specs 09328.pdf - Freese and Nichols, Inc.
final bid specs 09328.pdf - Freese and Nichols, Inc.
final bid specs 09328.pdf - Freese and Nichols, Inc.
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2.00 PRODUCTS<br />
2.01 MATERIALS<br />
A. Materials used in connection with the installation of the lightning protection systems shall be<br />
approved for lightning protection systems by the Underwriters' Laboratories, <strong>Inc</strong>. No<br />
combination of materials shall be used that form an electrolytic couple of such a nature that<br />
corrosion is accelerated in the presence of moisture unless moisture is permanently excluded<br />
from the junction of such metals. When unusual conditions exist which would cause<br />
deterioration or corrosion of conductors, conductors with suitable protective coatings or<br />
oversize conductors shall be used. If a mechanical hazard is involved, the conductor size<br />
shall be increased to compensate therefore, or suitable protection shall be provided. The<br />
conductors may be protected by covering them with molding or tubing preferably made of<br />
wood or nonmagnetic material. If metal tubing is used, the conductor shall be electrically<br />
connected to it at its upper <strong>and</strong> lower ends.<br />
B. All equipment used shall be new <strong>and</strong> of a design <strong>and</strong> construction to suit the application in<br />
accordance with UL 96A requirements <strong>and</strong> shall be so marked.<br />
2.02 MANUFACTURED PRODUCTS<br />
A. CONDUCTORS - Copper conductors manufactured of copper grade ordinarily required for<br />
commercial electrical work generally designated as being 98 percent conductive when<br />
annealed. Down conductors of copper cable for installations other than towers shall weigh not<br />
less than 187.5 pounds per thous<strong>and</strong> feet <strong>and</strong> the size of any wire of this cable shall not be<br />
less than No. 17 AWG (0.045 inch). Down conductors shall be tinned. The thickness of any<br />
copper ribbon or strip shall be not less than No. 16 AWG (0.051 inch).<br />
B. AIR TERMINALS - Air terminals shall be tapered to a blunt point. The rod shall be of solid<br />
copper, 1/2 inch in diameter. Air terminals <strong>and</strong> support shall be designed over 24 inches to<br />
h<strong>and</strong>le a 75 pound per square foot wind load. All air terminals shall be supported by a<br />
suitable brace, with guide(s) not less than one-half the height of the air terminal. Air terminals<br />
shall be located in accordance with the requirements of NFPA 780 <strong>and</strong> UL 96A. Air terminals<br />
shall extend at least ten inches above the object or area they are intended to protect. Air<br />
terminals shall be placed around the perimeter of flat or gently sloping roofs at intervals not<br />
exceeding 20 feet.<br />
C. FASTENERS - Fasteners shall be of the same material as the conductor base material or<br />
bracket being fastened, or other equally corrosion resistant material. Galvanized or plated<br />
materials shall not be used.<br />
D. FITTINGS - Fittings/bonding devices, cable splicers, <strong>and</strong> miscellaneous connectors shall be<br />
suitable for use with the installed conductor <strong>and</strong> shall be copper, bronze or aluminum with bolt<br />
pressure connections to the cable. Cast or stamped crimp type fittings shall not be used.<br />
E. Aluminum material may be used where the installation of dissimilar metals creates problems.<br />
The Contractor shall field verify all materials involved in the total installation <strong>and</strong> shall install<br />
system in accordance with all applicable NFPA <strong>and</strong> U.L. codes <strong>and</strong> st<strong>and</strong>ards.<br />
Lightning Protection For Structures 26 41 13-2<br />
DRP09328
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